CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
13.0%
In the Linux kernel, the following vulnerability has been resolved: can:
peak_pci: peak_pci_remove(): fix UAF When remove the module peek_pci,
referencing ‘chan’ again after releasing ‘dev’ will cause UAF. Fix this by
releasing ‘dev’ later. The following log reveals it: [ 35.961814 ] BUG:
KASAN: use-after-free in peak_pci_remove+0x16f/0x270 [peak_pci] [ 35.963414
] Read of size 8 at addr ffff888136998ee8 by task modprobe/5537 [ 35.965513
] Call Trace: [ 35.965718 ] dump_stack_lvl+0xa8/0xd1 [ 35.966028 ]
print_address_description+0x87/0x3b0 [ 35.966420 ] kasan_report+0x172/0x1c0
[ 35.966725 ] ? peak_pci_remove+0x16f/0x270 [peak_pci] [ 35.967137 ] ?
trace_irq_enable_rcuidle+0x10/0x170 [ 35.967529 ] ?
peak_pci_remove+0x16f/0x270 [peak_pci] [ 35.967945 ]
__asan_report_load8_noabort+0x14/0x20 [ 35.968346 ]
peak_pci_remove+0x16f/0x270 [peak_pci] [ 35.968752 ]
pci_device_remove+0xa9/0x250
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < any | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 14.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure-4.15 | < any | UNKNOWN |
git.kernel.org/linus/949fe9b35570361bc6ee2652f89a0561b26eec98 (5.15-rc7)
git.kernel.org/stable/c/0e5afdc2315b0737edcf55bede4ee1640d2d464d
git.kernel.org/stable/c/1248582e47a9f7ce0ecd156c39fc61f8b6aa3699
git.kernel.org/stable/c/1c616528ba4aeb1125a06b407572ab7b56acae38
git.kernel.org/stable/c/28f28e4bc3a5e0051faa963f10b778ab38c1db69
git.kernel.org/stable/c/34914971bb3244db4ce2be44e9438a9b30c56250
git.kernel.org/stable/c/447d44cd2f67a20b596ede3ca3cd67086dfd9ca9
git.kernel.org/stable/c/949fe9b35570361bc6ee2652f89a0561b26eec98
git.kernel.org/stable/c/adbda14730aacce41c0d3596415aa39ad63eafd9
launchpad.net/bugs/cve/CVE-2021-47456
nvd.nist.gov/vuln/detail/CVE-2021-47456
security-tracker.debian.org/tracker/CVE-2021-47456
www.cve.org/CVERecord?id=CVE-2021-47456